A Nurse Is Caring for a Patient with Shock of Unknown

A nurse is caring for a patient with shock of unknown etiology whose hemodynamic monitoring indicates BP 92/54,pulse 64,and an elevated pulmonary artery wedge pressure.Which collaborative intervention ordered by the health care provider should the nurse question?

A) Infuse normal saline at 250 mL/hr.
B) Keep head of bed elevated to 30 degrees.
C) Hold nitroprusside (Nipride) if systolic BP <90 mm Hg.
D) Titrate dobutamine (Dobutrex) to keep systolic BP >90 mm Hg.